There’s nothing like starting off a new year with a good promotion. And Mileage Plus has stepped up to the plate this year with a promotion that offers its members up to 25,000 bonus miles for signing up and registering activity with five partners.

But wait, it gets better. Register activity with just three partners and you will still earn 15,000 bonus miles. Or use four partners and earn a cool 20,000 bonus miles.

This promotion, however, does have several caveats. First, there are only five partners to select from: United Mileage Plus Dining, United Mileage Plus Grocery Miles, United Mileage Plus Visa, MSN and Nextel. Also, only Mileage Plus members who reside in Arizona, California, Colorado, Washington D.C., Illinois, Maryland, Oregon, Virginia or Washington are eligible. And finally, existing Mileage Plus Visa cardholders and Mileage Plus Dining members are not eligible.

Those who are eligible though will want to take advantage. You can start by signing up for the promotion at http://www.united.com/5partnerbonus. You then have until Feb. 28 to register for the promotion and until April 30 to clock up the activity.

We recommend Mileage Plus Dining, Mileage Plus Grocery Miles and the United Mileage Plus Visa, as there is no initial outlay in cost. Earn 10 miles per dollar spent on food, beverages, tax and tip with Mileage Plus Dining. This earning potential is only for your first visit to a participating establishment every month. Call (800) 555-5116 to enroll.

You can sign up for Mileage Plus Grocery Miles at over 1,200 Safeway, Vons, Pavillons, Dominick’s, Genuardis and Pak’n Save Foods locations, or simply by calling (800) 645-4502. Members can earn 125 miles for every $250 spent.

If you do not plan on using your Mileage Plus Visa card, consider applying for the no fee Mileage Plus Reward Visa, whereby you earn one mile for every $2 spent. To enroll call (866) 738-7750.

Lastly, earn 250 bonus miles when you register to receive Mileage Plus email offers. Go to http://www.united.com/updateprofile before Feb. 28 to submit your email address.